Home / 154,939.32-213,823.26-121,347

Finding the Fourth Proportional to 154,939.32, 213,823.26 and 121,347

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Solution

The fourth proportional to 154,939.32, 213,823.26 and 121,347 is: 167,464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,939.32 : 213,823.26 = 121,347 : x
  2. Step 2: Convert to fraction form
    154,939.32/213,823.26 = 121,347/x
  3. Step 3: Cross multiply
    154,939.32x = 213,823.26 × 121,347
  4. Step 4: Simplify right side
    154,939.32x = 25,946,811,131.22
  5. Step 5: Solve for x
    x = 25,946,811,131.22/154,939.32
  6. Step 6: Final answer
    x = 167,464.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.